Refrigeration Assembly Technician

Northern Geo, LLC – Appleton, MN

Employment Type: Part-Time

Schedule: Monday–Friday

About Us

Northern Geo, LLC manufactures high-efficiency geothermal heat pumps, energy-recovery

systems, and other advanced HVAC/R products. Our team is dedicated to producing

reliable, sustainable equipment that supports the transition to clean, renewable energy.

We are seeking a skilled Refrigeration Assembly Technician to support the assembly,

brazing, testing, and quality assurance of refrigeration circuits used in our geothermal heat

pumps and related equipment.

Key Responsibilities

• Assemble refrigeration circuits, including piping, coils, compressors, valves, and

related components

• Perform copper tube brazing, soldering, and leak-free joint fabrication

• Install and connect refrigeration components according to engineering drawings

and work instructions

• Conduct pressure testing, vacuuming, and charging procedures following

established standards

• Inspect assemblies for quality, accuracy, and compliance with specifications

• Operate tools and equipment such as torches, vacuum pumps, gauges, and hand

tools

• Work closely with engineering, manufacturing, and quality teams to resolve issues

and improve processes

• Maintain a clean, organized work area and follow all safety protocols

• Document work performed and report defects, material shortages, or equipment

concerns

Qualifications

• Experience in refrigeration assembly, HVAC/R, or related manufacturing preferred

• Proficiency in copper brazing and refrigeration piping techniques

• Understanding of refrigeration cycles, components, and basic system operation

• Ability to read and interpret mechanical drawings, schematics, and work

instructions

• Familiarity with pressure testing, vacuum procedures, and charging practices

• Strong attention to detail and commitment to quality

• Ability to lift 50+ lbs and work in a fast-paced production environment

• HVAC/R certification or training is a plus but not required

• High school diploma or equivalent